Cop bobbin and cop grip holder for a weaver&#39;s shuttle



Nov. 24, 1959 H. 'r. SIMMONS 2,914,095

COP BOBBIN AND COP GRIP I-IOLDER FOR A WEAVERS SHUTTLE Filed Oct. 7,1955 2 Sheets-Sheet 1 I2 12 lb INVENTOR.

His/way T SiMMcNs Nov. 24, 1959 H. T. SIMMONS 2,914,095

COP BOBBIN AND COP GRIP HOLDER FOR A WEAVERS SHUTTLE Filed Oct. 7, 19552 Sheets-Sheet 2 IN V EN TOR.

HENRY T SIM-MOMS 3/ F1 77. BY W W of the shuttle.

COP BOBBIN AND COP GRIP HOLDER FOR A WEAVERS SHUTTLE enry T. Simmons,Skaneateles, N.Y.

Application October 7, 1955, Serial No. 539,106

3 Claims. (Cl. 139-198) This invention relates to a cop bobbin and a copgrip holder which is a great improvement over the way, now in'use, ofholding a cop in place in a shuttle dispensing the yarn from the insideof a cop.

It has been customary heretofore to place a cop in the cavity of ashuttle forcing the wound yarn of the cop to fit into the grooves in thecavity of the shuttle. This is not'a very successful means of holdingthe cop in place in the shuttle. It also produces problems such asslugging, breakage and a great deal of waste. Due to this manner ofholding the cop is not substantially efficient. These cops are notstructurally capable of withstanding the strain caused by the speed ofthe shuttles as they pass over the length of the fabric on the weavingmachines. This speed proves destructful to the yarns, whether they befine or course, because of the lack of tension control on the cop as theyarn is being unwound and also the lack of a proper hold on the cop inthe shuttle. This speed has a tendency to snap the yarn as it is beingunwound from the inside of the cop while in the process of weaving.Also, in the present cops, it is necessary to unwind the yarn from theinside rear of the cop; this being done, the yarn tends to snarl andsnap at the eye This presents numerous problems to the weaver; one beingthat the weaver must then remove the snarled cop and replace it with anew one.

My invention improves these conditions because of its novel constructionwhich eliminates yarn waste and also slugging and breakage.

Particularly, my invention allows one to freely, and without anydifficulty, unwind the yarn from the outside front of the cop bobbin dueto its structure, instead of to them. The change from the cop bobbin nowin use to my novel type would be a simple operation.

In accordance with the present invention, a weavers shuttle is providedcomprising a bobbin cavity, and means for retaining the cop grip holderin the shuttle. The weavers shuttle is also provided with an eye locatedin the front portion, which guides the yarn when it is unwound from theoutside front of a cop bobbin which is inserted into the cop grip holderthrough a rear opening and locks 0 in place in the cop grip head. Thiscop grip holder has from the inside rear as is now being done. Thisprevents i any strain on one particular place on the cop of yarn andalso any entanglement of the yarn.

Another advantage of this invention is the fact that the metal copbobbin is attached to a grooved wooden insert ;manner in which thecop-bobbin is held in the cop grip holder. This saves a great deal oftime spent on rethreading the yarn in the eye of the shuttle, and alsoeliminates expensive waste.

The cop grip holder acts as a tension control on the yarn of the bobbinand also as a casing which, when placed in'the cavity of the shuttle,equalizes the pressure on the yarn located on the cop bobbin as theshuttle is "passed at high speed on the loom.

Furthermore, it is not necessary to change the style of the shuttlepresently used in the mills throughout the :WOIld, because the presentinvention accommodates itself a flap which closes to hold fast the copbobbin with the yarn thereon and also controls the tension on the yarnlocated on the cop bobbin. This is done by distributing equal pressurethroughout the length of the cop of yarn. This entire cop grip holder,along with the cop bobbin is placed in the bobbin cavity of the shuttle,so that the cop grip head of the cop bobbin which is grooved, fits onthe yoke provided in the shuttle, thus automatically locking itself inplace. The stops at the front of the shuttle of the bobbin cavity act asmeans for placing the cop grip holder easily in place. A view hole isprovided for in the cop grip holder to allow one to see the amount ofyarn on the cop bobbin without having to remove the cop bobbin from thecop grip holder which is inserted in the weavers shuttle. v

This invention consists of the features of construction, combination andarrangement of parts herein fully described and claimed, with referenceto the accompanying drawings in which:

Figure 1 is a side elevation of a cop bobbin illustrating the novelconstruction thereof.

Figure 2 is a side elevation of a cop grip holder show-' ing the meansfor closing and opening the cop grip holder for placing a cop therein.

Figure 3 is a top view of a shuttle illustrating the placement of theyoke and the stops located in the bobbin cavity of the shuttle.

Figure 4 is a front elevation of a cop grip head removed from the copgrip holder, and illustrating the action of the spring lock.

Figure 5 is a front elevation of the cop grip facing removed from thecop grip holder.

Figure 6 is an end view of the cop grip holder taken on line 6-6 ofFigure 2, and showing the cop grip holder in the open position forreceiving a cop.

Figure 7 is an end view as in Figure 6 showing the cop grip holder inthe closed position, as after receiving a cop of yarn therein.

Figure 1 illustrates a wooden cop bobbin insert plug 16, conical inshape. Concentric grooves 15 are formed into the bobbin insert 16, whichact as a basis to aid in retaining the yarn which is wound on the plug16 of the bobbin, represented as a whole by thenumeral 17. A metal copbobbin head 10 is illustrated fastened to the wooden insert 16 by screws12 in the shoulders 13 thereof. The head 10 is provided with grooves 11on either side thereof which are means for locking the cop bobbin inplace in the cop grip holder, which will be described. A square hole 18is provided in the interior of the bobbin for the placing of a spindleat 14 for winding the cop on the bobbin 17. This is convention and willnot be described further.

With reference to Figure 2, a cop grip holder is illustrated as havingat its back end and fastened thereto, a cop bobbin grip facing 24,spring lock 25 and cop bobbin grip head 20. The cop bobbin grip head 26and spring lock 25 are fastened to the cop bobbin grip facing 24 byinserted metal guide pins 21 and screw 22. The cop bobbin grip facing 24is fastened to the cop bobbin grip holder 30 by screws 27. Theassociated structurelforholding the cop bobbin in the cop bobbin gripholder is designated by the numeral 50. With reference to the cop bobbin17.

Figures 2 and 6, the remainder of the cop bobbin grip holder is asubstantially tubular metal casing having a portion 30A adapted tooverlap part of the body of the holder 30. A toggle-like flap 29 ishingedly disposed on hinge pins 28, of conventional type, and has hingepins 28A disposed through cut-out openings therein. Connecting members29A are hingedly fastened to the hinge pins 28A and to the end ofportion 30A, so that as flap 29 is folded over the body of the holder30, connecting members 29A draw portion 30A over the body in overlappingrelationship, at the same time tightening the body of the holder 30around a cop of yarn placed therein by reducing the diameter of the bodyslightly. This serves to exert pressure on the cop and therefore toprevent the cop from separating in the holder.

It is well known that, as the shuttle travels to one side of the loom,the picker stick strikes the shuttle a hard blow, thus driving theshuttle back across the loom at high speed. This blow received by theshuttle from the picker stick at either side of the loom renders arelatively high impact through the shuttle, and the change of directionof travel of the shuttle is extremely abruptinstantaneous. For thisreason, the cop in the cop grip holder has heretofore been known tobreak up frequently, thus causing a time delay in the weaving operation,and a waste of yarn. The broken portion of the cop will be drivenforward in the shuttle where it will jam against the tension brush orthe yarn eye and interrupt the free action of the weft.

A second spring lock 33 is disposed between the cop grip facing 24 andthe back portion 51 thereof, which portion 51 is fastened to the body ofthe cop grip holder 30, preferably by screws.

The second spring lock 33, Figure 5, has a flat circular metal body, thebody of the facing 24, which is fastened in the assembly by pins 21 andscrews 22. A concentric inner opening 38 is disposed substantially inthe center of the facing 24. Spring lock 33, consisting of two -members,substantially identical, is slidably disposed in openings in the facingbody, and the members are maintained in spaced relationship with eachother by guide pins 35 having springs 34 disposed therearound, the pinsbeing disposed in openings 64. Screws 37 through the body of the facing24 are disposed in slots 36 in the lock members 33 and act as guides forthe sliding action of the lock.

When the cop bobbin with the yarn in the form of a cop thereon, alldesignated by the numeral 17 is placed in the front opening 32 of thecop grip holder 30, the ,head of the bobbin 17 protrudes through thecentral opening 38 of the cop grip facing 24, and the grooves 11 comeinto alignment with the inner edges 70 of the .spring lock 33. When thecop grip holder 30 is placed .in the cavity 42 of the shuttle 39, thespring lock members 33 are held inwardly by way of the outer ends beingforced against the inside of the yoke structure 40, thus maintaining theinner edges 70 within the grooves 11 of In this way the bobbin 17 isheld within the cop grip holder 30.

Spring lock 25 comprises two members pivotally attached at the bottom ofthe assembly by the screw 22,

Figure 4. The upper ends of the two members protrude above the assemblyand act as handles 19. A bowed spring 23 is disposed between the twomembers, forcing them outwardly away from each other, and the outwardtravel of the two members is limited by the placement of the metal pins21. The whole spring lock 25 is fastened to the cop grip headltl, whichhas an opening 26 therethrough. The two projecting shoulders at thesides of the spring lock 25 fit into the yoke 40 of the shuttle 39 forretaining the cop grip holder 30 in place therein.

T he yoke 40 is a conventional plate having a U-shaped opening thereinadapted to receive. the cop grip head 20, the edges of the yoke 40 beingadapted by reason of their dimension to grip the spring lock orotherwise engage the spring lock for holding the cop grip holder 30 inplace.

A cop of yarn is wound on the bobbin 17. The bobbin is placed throughthe front opening 32 of the cop grip holder 30, with the flap 29 in theposition of Figure 6 so that the holder 30 is open. With the cop bobbin17 all the way in the holder, the grooves 11 in head 10 are inalignmentwitkthe inner edges 70 of spring lock 33. The operatortemporarily Icompresses spring lock 33 to retain the bobbin head 10 inposition, then the operator closes flap 29 into the position in Figure7. This exerts pressure on the cop of yarn, maintaining it in position.The cop grip holder 30 is then placed in the cavity 42 of shuttle 39, sothat the lugs or stops 31 on holder 30 bear against stops 41 in theshuttle, thus aligning holder 30 in the correct position. The cop griphead 20 and spring lock 25 at the back of the holder 30 fit into yoke41) at the back of the shuttle. Yoke {it} engages the spring lock 25 toretain the holder 30 securely within the cavity 42 of the shuttle 39.The weft is unwound from the outside front, or conical shaped end, ofthe cop, through the front opening 32 of the holder 30, and out throughthe front end of shuttle 39, passing through the eye of the front end ofthe shuttle. The cop bobbin 17 is maintained within the holder 30 by thespring lock 33 being compressed by the inside walls of the shuttle 39,so that the two members of the spring lock 33 have their inner edges 70disposed within the grooves 11 of the head 10.

It is therefore seen that the tightly closed grip holder 30 maintains apressure around the cop of yarn and throughout the length thereof. Thispressure on the cop prevents the cop from breaking up as hereinbeforedescribed. In the old manner, the yarn was unwound from the inside backof the cop. This method affords little control on the tension of theholder on the cop, allowing the cop either to break up, or allowingportions of the cop to collapse and form slugs of yarn which jam in theyarn eye and break the weft.

Since in the present invention, the yarn is unwound from the outsidefront, or conical end, of the cop, better control is afforded againstslugging. Better tension control of the weft is also afforded, due tothe pressure of the holder on the cop of yarn. It will become obviousthat, with the Weft being taken from the conical end of the cop, oroutside front, slugging is virtually eliminated; and the yarn is unwoundevenly from the cop as the shuttie travels through the loom. Thecondition whereby the cop had the tendency to collapse, in part, as theyarn became nearly unwound cannot occur with the present method, as theyarn is unwound from the outside of the cop.

An embodiment of the specific structure having been disclosed for thepurpose of illustration only, it is to be understood that departures maybe made from time to time which do not depart from the spirit and scopeof the appended claims.

I claim:

1 A wcavers shuttle and a cop grip holder, in combination, for a weavingmachine, said Weavers shuttle and cop grip holder receiving andinterlocking an inserted cop bobbin having yarn wound thereon, saidweavers shuttle comprising a cavity for receiving said cop grip holder,stops located in the front portion of said cavity, a yoke suitablyfastened at the rear portion of said cavity for interlocking said copgrip holder, and an eye located in the front portion for guiding yarn asit is unwound from the outside front of said cop bobbin; said cop gripholder comprising a tube having an open end for receiving said copbobbin, means at the back end of said cop grip holder for interlockingsaid cop bobbin in la fixed relation with respect to said cop gripholder, said means comprising a spring lock received in ,a' lo:kingposition when placed on said yoke, holding said inserted cop bobbin in afixed position, a second means located at the back portion of said copgrip holder for locking said cop grip holder in a fixed position whenplaced in said weavers shuttle, said second means comprising a secondspring lock engaging said cavity in a locking position holding said copgrip holder in a fixed position, a flap extending longitudinally andsuitably attached to the outside portion of said tube, said flap, whenin a closed position, forming means for equally distributing pressure onsaid cop bobbin and for reducing strain on any one particular place onthe yarn, as it is unwound from the outside front of said cop bobbin;said cop bobbin comprising a cop head having grooves for interlockingwith said yoke and said first spring lock, said cop head fastened atshoulders, forming a portion thereof, to a grooved insert plug, saidgrooved insert plug forming means on which yarn is wound and unwound, asquare opening in said cop head and longitudinally located throughoutsaid grooved insert plug, and the above said means for guiding andunwinding the yarn from the outside front of said cop bobbin wheninserted in said cop grip holder located in said Weavers shuttle.

27 A cop grip holder for a weavers shuttle for receiving a cop bobbinhaving a cop of yarn thereon, comprising in combination, a tube havingan open end for receiving said cop bobbin, locking means forinterlocking said cop bobbin in a fixed relation with respect to saidtube, a flap extending longitudinally and suitably attached to theoutside portion of said tube, said flap, when in a closed positionaround said cop of yarn, forming means for equally distributing pressureon said cop for reducing slugging of said yarn, and for preventing saidcop from breaking during operation of the shuttle as the yarn is unwoundfrom the outside front of the cop.

3. A cop bobbin for a cop grip holder and a weavers shuttle comprising acop bobbin grip head having grooves for interlocking with means providedin said cop grip holder when said cop grip holder with said cop bobbingrip head therein is inserted in said shuttle, said cop bobbin grip headbeing fastened at the shoulders forming a part thereof, to an insertplug having an opening therethrough, and the combination of all of theabove forming means for unwinding yarn, wound on said insert plug, fromthe outside front of the cop.

References Cited in the file of this patent UNITED STATES PATENTS 45,682Tunstill Dec. 27, 1864 444,095 Emery Jan. 6, 1891 454,797 Draper June23, 1891 875,890 Brandt Jan. 7, 1908 FOREIGN PATENTS 20,421 Austria June10, 1905 260,686 Italy Oct. 9, 1928

